Rotary locking collar-button.



i No. 838,867.

. PATENTED 00123, 1906. .E. 0. BLAKE.

ROTARY LOOKING COLLAR BUTTON.

' nruonxon rum; nu; 1 0. 900.

34 M I Am 6 WTTORNEYS T ATE O CE-. EDWIN CHARLES, BLAxnforjsAN FRANCISCO. I o LIFoR A AssicNOB TO GEORGE PONAROUSE, or SAN FRANCISCO, CALIFORNIA. I.

' ROTARY LOCKING COLLAR-BUTTON.

Specification of Letters Patent. mi imum filed March 10,1906. Serial No. 305,366.

Patented Oct. 23, 1906.

To all whom it may concern:

Beit known that I, EDWIN CHARLES BLAKE, a citizen of the United States, residing at San Francisco,in the county of San Francisco and State of California, have invented certain new and useful Improvements in Rotary Locking Collar-Buttons; and I do hereby declarethe followin to be a full, clear, and exact description 0% the invention, such as will enable .others skilled in the art to which it appertains to make and use the same.

Generally speaking, my present invention relates to collar-buttons, but to be more specific it is a rotary locking collar-button.

In my button I have made provision for holding the head of the button firmly during the process of inserting the button in the buttonhole, while the subsequent adjustment of the head into its normal position is accomplished by simply throwin the head over until it is parallel with the irection of the buttonhole.

I The invention more particularly residesin the novel comb natlon, construction, and

arrangement of parts, all as more full hereinafter described, and set forth in the appended claims.

In the accompanying drawings, in which similar letters of reference designate corresponding parts, Figure 1 is a central section of the button, the head being shown in a position ready for insertion through the buttonhole. Fig. 2 is a similar view showing the position of the head as normally assumed. Figs 3 is an elevation of the button, the head belng in the position shown in Fig. 1, the view being taken at right angles to that shown in Fi 1. Fig. 4 is an elevation showing the hea in its normal position. Fig. 5 is an elevation of the button with the head formed with an elongated nose for use as a back collar-button. I

I will now set forth the general construction of the button and subsequently explain the operation of the same. The butt or base A of the button is formed in the usual manner either integral with the shank B or united to it, as desired. This shank B spreads out at its u per end to form a yoke the sidearms a a 0 which unite to form the cross-bar b. Encircling this cross-bar b and occupyin the space between the arms a and a is the ead C, having formed therein the diametrically opposite perforations 0. At the base of the yoke and formed in the shank B is the groove d, the lips of which extend slightly into the path of the rim of the head C.

Now 1t 1s manifest from the description so far gone into that the head O is'free to revolve on the cross-bar b as a pivot and is prevented from making a complete revolution by the presence of the projecting lips of the groove (1. Now in order to provide means whereby these lips can be passed and the groove (1 reached the perforations e in the head C, through which the bar 1) passes,

are slightly elongated, and from the ex-.

tremities of those elongated :perforations extend slits in the material forming the head C. I These slits permit the sides of the opening e to yield and move outward on the cross-bar b to permit the head 0 to gFroove d and asspring over the lips of the sume the position shown in igs. 1, 3, and 5. In this position the head is held comparatively rigid while it is being forced through the buttonhole, after which it can be'sprung out of the groove to assume the position shown in Figs. 2 and 4.

From the above description itis manifest that I have provided a very simple collarbutton made up essentially of buttwo parts and capable of withstanding severe and constant usage.

Having thus fully described my invention, what I claim, and desire to secure'by Letters Patent, is I 1. A collar-button comprising a base, a shank Cprojecting therefrom having side arms forme integral therewith, and a head having pivotal connections with said side arms, the

shank having a groove with side lips, and

the pivotal connections being sufliciently lips to permit the rim ofthe head to be passed over either lip into the groove, substantially as described. I

2. A. collar-button comprising 'a' base, a shank (projecting therefrom, a yoke formed on sai shank, and a head pivoted in said .loose in the direction extending from the yoke and having diametrically opposite openings to form pivotal connections with the si es of the yoke,said openings being elongated and the head being slitted at the ends of the opening, the shank having a roove adapted to receive the rim of the bee stantially as described.

In testimony whereof I have hereunto set my name to this specification in the presence of two subscribin witnesses.

EDW CHARLES BLAKE.

Witnesses:

Mrs. E. R. BLAKE, LINCOLN BLAKE. 

